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# import maya.cmds
# maya.cmds.loadPlugin("zoomCameraCmd.py")
# maya.cmds.spZoomCamera()

import sys
import maya.OpenMaya as OpenMaya
import maya.OpenMayaUI as OpenMayaUI
import maya.OpenMayaMPx as OpenMayaMPx

kPluginCmdName = "spZoomCamera"

print "zoomCameraCmd.py has been imported...."

# command
class scriptedCommand(OpenMayaMPx.MPxCommand):
	camera = OpenMaya.MDagPath()
	def __init__(self):
		OpenMayaMPx.MPxCommand.__init__(self)

	def redoIt(self):
		global camera
		fnCamera = OpenMaya.MFnCamera(camera)
		f1 = fnCamera.focalLength()
		fnCamera.setFocalLength(f1 * 2.0)

	def undoIt(self):
		global camera
		fnCamera = OpenMaya.MFnCamera(camera)
		f1 = fnCamera.focalLength()
		fnCamera.setFocalLength(f1 / 2.0)

	def doIt(self, args):
		global camera
		camera = OpenMaya.MDagPath()	
		try:
			OpenMayaUI.M3dView.active3dView().getCamera(camera)
		except:	
			sys.stderr.write( "ERROR: getting camera \n" )
		else:
			self.redoIt()

	def isUndoable(self):
		return True

#Cmd Creator
def cmdCreator():
	return OpenMayaMPx.asMPxPtr( scriptedCommand() )
		
# Initialize the script plug-in	
def initializePlugin(obj):
	plugin = OpenMayaMPx.MFnPlugin(obj)
	try:
		plugin.registerCommand( kPluginCmdName, cmdCreator)
	except:
		sys.stderr.write( "Failed to register command: %s\n" % kPluginCmdName )

# Uninitialize the script plug-in	
def uninitializePlugin(obj):
	plugin = OpenMayaMPx.MFnPlugin(obj)
	try:
		plugin.deregisterCommand(kPluginCmdName)		
	except:
		sys.stderr.write( "Failed to unregister command: %s\n" % kPluginCmdName )

	
